What Material Is The Large-diameter Seawater Desalination Butterfly Valve Made Of (what Are Its Performance Characteristics)
Lined Butterfly Valve is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc, which rotates around the valve axis to achieve opening and closing.
What is a large-diameter seawater desalination butterfly valve and what are its performance characteristics
Large-diameter seawater desalination butterfly valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals and radioactive media. It mainly plays a role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulating. It is widely used in general industries such as petroleum, gas, chemical industry, water treatment, etc., and is also used in the cooling water system of thermal power plants.
What material is the large-diameter seawater desalination butterfly valve made of (what are its performance characteristics)
As the name suggests, the large-diameter seawater desalination butterfly valve is a large-diameter seawater desalination flange butterfly valve. The process pipe diameter is generally DN300~1600, which exceeds the use range of general ball valves and stop valves.
Commonly used butterfly valves are wafer butterfly valves and flange butterfly valves. The wafer butterfly valve uses stud bolts to connect the valve between two pipe flanges. The flange butterfly valve has flanges on the valve, and bolts are used to connect the flanges at both ends of the valve to the pipe flange.
The valve plate of the seawater desalination butterfly valve adopts a double-flat flow design, which can ensure the strength and low head loss under the dynamic impact of water flow. The main material is nickel-chromium alloy cast iron or nickel-chromium alloy ductile iron, which has good seawater corrosion resistance.
The main material of the valve is nickel-chromium alloy cast iron, which has good castability, high strength and hardness, good seawater corrosion resistance; good economy, especially suitable for manufacturing large-diameter seawater valves.
The valve adopts a double eccentric structure, which has the function of tightening as it closes, and has reliable sealing performance; after opening, it can ensure that the valve plate and the sealing surface are completely out of contact, protecting the sealing surface from damage.
The valve plate adopts a double flat truss flow structure, which has low flow resistance, high strength and good vibration resistance.
The valve bearing is made of copper alloy, with low friction resistance during operation, high load capacity and seawater corrosion resistance.
The valve has a two-way sealing function and is not restricted by the flow direction of the medium in the pipeline during installation. (If only one-way medium needs to be controlled, it should be installed in a direction that is conducive to sealing).
Anti-seawater corrosion coating: The inner and outer surfaces of the valve adopt epoxy resin coating technology, and the coating thickness is ≥250μm; prevent dirt adsorption and microbial growth. ZF101 seawater corrosion-resistant heavy anti-corrosion coating can also be used according to customer requirements.
What is the material of the large-diameter seawater desalination butterfly valve?
Valve body: nickel-chromium alloy cast iron HT250Ni2.5Cr, nickel-chromium alloy ductile iron STQNiCr
Valve plate: nickel-chromium alloy cast iron HT250Ni2.5Cr, nickel-chromium alloy ductile iron STQNiCr
Valve stem: 2205 or 2507 duplex stainless steel
Valve body sealing surface: 2205 duplex stainless steel or copper alloy
Valve plate sealing ring: EPDM
Fasteners in contact with the medium: 2205 or 2507 duplex stainless steel
